CVE-2026-11831CWE-122

CVE-2026-11831

Medium · published October 19, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
9.5
In the wild
Unconfirmed
What it is

IBM MQ could allow an authenticated attacker to cause a limited denial of service and obtain very limited information about process memory layout due to an out-of-bounds read when processing a specially crafted client request.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00201 · 9.5th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-10-19T21:17Z
Affected products (109)
ProductVersionsFixed in
ibm/mq_operator≥ 2.0.0, ≤ 2.0.29—
ibm/mq_operator≥ 3.2.0, ≤ 3.2.29—
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References (1)
https://www.ibm.com/support/pages/node/7292667 · [email protected]
EPSS history
Timeline
  • 21 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 19 OCT 16:41Z
    IBM MQ Heap-based Buffer Overflow
    cvelistv5
  • 19 OCT 16:41Z
    IBM MQ Heap-based Buffer Overflow
    cvelistv5